Yaskawa F7 Drive Programming Manual - Manual (Page 44)

Programming 36
• If the wiring length between the Drive and the motor is long, decrease the carrier frequency
• If speed and torque are inconsistent at low speeds, decrease the carrier frequency
• If leakage current from the Drive is large, decrease the carrier frequency
• If the audible motor noise is too great, increase the carrier frequency (may require Drive current derating)
When parameter C6-02 is set to “0: Low Noise” the Drive uses a carrier frequency of 2 kHz and reduces the motor audible noise
by approximately 5 dB. over the conventional 2 kHz setting (C6-02= 1). The Drive modulates the nominal PWM pattern to
achieve the lower noise. This setting is normally used with high starting torque loads that are frequently started and stopped or,
applications where leakage current needs to be minimized and motor audible noise is important.
If parameter C6-01 = “0: Heavy Duty”, C6-02 can only be set to 0 or 1.
C6-03 Carrier Frequency Upper Limit
C6-04 Carrier Frequency Lower Limit
Setting Range: 0.4 to 15.0 kHz
Factory Default: Model Dependent
C6-05 Carrier Frequency Proportional Gain
Setting Range: 0 to 99
Factory Default: 0
Table 2 Wiring Length and Carrier Frequency
Wiring Length 164 ft or less 328 ft or less Over 328 ft
C6-02 (carrier frequency) setting 1 to 6 (15 kHz max.) 1 to 4 (10 kHz max.) 1 to 2 (5 kHz max.)
Table 3 Carrier Frequency Parameter Defaults (C6-01=2: Normal Duty 2)
208V-240V Drives 1 480V Drives 1
Model
CIMR-
F7U
C6-02
Carrier
Frequency
(kHz)
C6-03
Carrier
Frequency
Max.
(kHz)
C6-04
Carrier
Frequency
Min.
(kHz)
C6-05
Carrier
Frequency
Gain
Nominal
HP
Model
CIMR-
F7U
C6-02
Carrier
Frequency
(kHz)
C6-03
Carrier
Frequency
Max.
(kHz)
C6-04
Carrier
Frequency
Min.
(kHz)
C6-05
Carrier
Frequency
Gain
Nominal
HP
20P4 4 (10.0) 4 (10.0) 4 (10.0) 0 0.5/0.75 40P4 6 (15.0) 6 (15.0) 6 (15.0) 0 0.5/0.75
20P7 4 (10.0) 4 (10.0) 4 (10.0) 0 1 40P7 6 (15.0) 6 (15.0) 6 (15.0) 0 1
21P5 4 (10.0) 4 (10.0) 4 (10.0) 0 1.5/2 41P5 6 (15.0) 6 (15.0) 6 (15.0) 0 1.5/2
22P2 3 (8.0) 3 (8.0) 3 (8.0) 0 3 42P2 6 (15.0) 6 (15.0) 6 (15.0) 0 3
23P7 4 (10.0) 4 (10.0) 4 (10.0) 0 5 43P7 6 (15.0) 6 (15.0) 6 (15.0) 0 5
25P5 6 (15.0) 6 (15.0) 6 (15.0) 0 7.5 45P5 6 (15.0) 6 (15.0) 6 (15.0) 0 7.5
27P5 6 (15.0) 6 (15.0) 6 (15.0) 0 10 47P5 6 (15.0) 6 (15.0) 6 (15.0) 0 10
2011 3 (8.0) 3 (8.0) 3 (8.0) 0 15 4011 3 (8.0) 3 (8.0) 3 (8.0) 0 15/20
2015 4 (10.0) 4 (10.0) 4 (10.0) 0 20 4015 4 (10.0) 4 (10.0) 4 (10.0) 0 25
2018 4 (10.0) 4 (10.0) 4 (10.0) 0 25 4018 4 (10.0) 4 (10.0) 4 (10.0) 0 30
2022 4 (10.0) 4 (10.0) 4 (10.0) 0 30 4030 3 (8.0) 3 (8.0) 3 (8.0) 0 40/50
2030 4 (10.0) 4 (10.0) 4 (10.0) 0 40 4037 3 (8.0) 3 (8.0) 3 (8.0) 0 60
2037 2 (5.0) 2 (5.0) 2 (5.0) 0 50 4045 3 (8.0) 3 (8.0) 3 (8.0) 0 75
2045 2 (5.0) 2 (5.0) 2 (5.0) 0 60 4055 2 (5.0) 2 (5.0) 2 (5.0) 0 100
2055 3 (8.0) 3 (8.0) 3 (8.0) 0 75 4075 2 (5.0) 2 (5.0) 2 (5.0) 0 125
2075 1 (2.0) 1 (2.0) 1 (2.0) 0 75/100 4090 3 (8.0) 3 (8.0) 3 (8.0) 0 150
2090 1 (2.0) 1 (2.0) 1 (2.0) 0 125 4110 2 (5.0) 2 (5.0) 2 (5.0) 0 200
2110 1 (2.0) 1 (2.0) 1 (2.0) 0 150 4160 2 (5.0) 2 (5.0) 2 (5.0) 0 250
4185 1 (2.0) 1 (2.0) 1 (2.0) 0 300/350
4220 1 (2.0) 1 (2.0) 1 (2.0) 0 450
4300 1 (2.0) 1 (2.0) 1 (2.0) 0 500+